Displacement and Position
An object starts at 2 m and moves to 14 m in 3 seconds. What is its displacement?
12 m
A car moves from 0 m to 30 m in 5 seconds. What is its velocity?
6 m/s
A plane moves with a constant velocity. What does that tell you about its acceleration?
0 m/s2
On a velocity vs. time graph, what does a horizontal line mean?
constant velocity, no acceleration
A skateboarder rolls from +5 m to –3 m in 4 seconds. What is their displacement?
-8 m
A bicyclist travels 50 m north in 10 s, then 50 m south in 10 s. What is their average velocity?
0 m/s
If an object moves at a constant speed, can it have an acceleration?
Yes, if it changes direction.
On a position vs. time graph, how do you recognize constant velocity?
Straight line with constant slope
A car moves at a constant velocity of 4 m/s for 6 seconds. What is its final position?
24 m
An object starts from rest and accelerates at 2 m/s² for 4 s. What is its final velocity?
8 m/s
A runner speeds up from 2 m/s to 8 m/s in 3 seconds. What is the acceleration?
2 m/s2
If the velocity vs. time graph slopes upward, what does that tell you about acceleration?
positive acceleration (speeding up)
A skateboarder starts at position x = –3 m and moves at a constant velocity of 2 m/s for 5 seconds. What is the final position?
7 m
A car moves with an acceleration of –3 m/s² for 5 s. If it starts at 20 m/s, what is its final velocity?
5 m/s
A car slows down from 25 m/s to 5 m/s in 4 seconds. What is the acceleration?
-5 m/s2
On a position vs. time graph, what does a horizontal line mean for the object's motion?
The object is not moving.